*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a{
    text-decoration: none;
}
li{
    list-style: none;
}
.clearfix:before,
.clearfix:after{
    display: block;
    content: "";
    clear: both;
}

/*nav部分*/
nav{
    height: 85px;
}
nav .logo img{
    margin-top: 20px;
}
nav .active .nav-link{
    color: #f58020 !important;
    font-size: 14px;
}
nav .nav-link{
    color: #444 !important;
    font-size: 14px;
}
.navbar-expand-lg .navbar-nav .nav-link{
    padding-right: 1rem  !important;
    padding-left: 1rem   !important;
}
nav .active a, nav li a:hover {
    color: #f68a2f !important;
}
.header .bg{
    background-image: url("../images/bg-1.jpg");
    width: 100%;
    height: 487px;
}
.header .bg .bg-wenzi{
    padding-top: 135px;
    width: 500px;
}
.bg-wenzi h1{
    color: #fff;
}
.bg-wenzi p{
    color: #ffffff;
    font-size: 18px;
}
.bg-wenzi a{
    background-color: #f68a2f;
    padding: 10px 30px;
    color: #ffffff;
    border-radius: 0;
}

/*main部分*/
.main-yi{
    padding-top: 70px;
}
.main-yi .yi-top{
    text-align: center;
    padding-bottom: 70px;
}
.main-yi .yi-top p{
    color: #646466;
}
.main-yi .yi-you{
    margin-left: 80px;
    width: 250px;
}
.main-yi .yi-you p{
    color: #646466;
    font-size: 12px;
}
.main-yi .yi-you h5{
    font-size: 16px;
}
.main-yi .quan{
    float: left;
    line-height: 75px;
}
.main-yi .yi-buttom{
    padding-top: 60px;
    padding-bottom: 70px;
}

.main-er{
    background-color: #f68a2f;
    color: #ffffff;
    padding-top: 70px;
    padding-bottom: 80px;
}
.main-er .er-top{
    text-align: center;
    padding-bottom: 40px;
}
.main-er ul li img{
    padding-right: 5px;
}

.main-san{
    padding: 70px 0 70px 0;
}
.main-san .san-top{
    text-align: center;
    padding-bottom: 40px;
}
.main-san .san-top p,.main-san .xia p{
    color: #646466;
}
.main-san h6{
    padding-top: 20px;
    color: #4680b0;
}

.main-si{
    text-align: center;
    padding: 50px 0 70px 0;
}
.main-si p{
    color: #646466;
}
.main-si .tu{
    padding-top: 55px;
}

/*footer部分*/
.footer-top{
    background-color: #2d2d2d;
    padding: 70px 0 60px 0;
    color: #ffffff;
}
.footer-top li{
    font-size: 16px;
}
.footer-top .ul-er{
    line-height: 28px;
}
.footer-bottom{
    background-color: #202020;
    color: #ffffff;
    font-size: 14px;
    padding: 30px 0 20px 0;
}
.footer-bottom .a1{
    text-align: right;
}

@media (max-width: 600px) {
    nav{
        height: auto;
    }
    nav .logo img{
        margin-top: 0;
    }
    .header .bg .bg-wenzi{
        width: 300px;
    }
    .main-yi .yi-you{
        margin-left: 50px;
    }
    .footer-bottom .a,.footer-bottom .a1{
        text-align: center;
    }
}

